Apparatus for the dry cooling of coke



y 4, 933- A DIERSCHKE 1,916,713

APPARATUS FOR THE DRY COOLING 0F COKE 2 Sheets-She et 1 Filed Dec. 14.1931 y 4, 33- A. DIERSCHKE 1,916,718

APPARATUS FOR THE DRY COOLING OF COKE Filed Dec. 14, 1951 2 Sheets-Sheet2 1 59 50 f 2 1 52 A g 45 1 E l E 42 56 i I] 61 l I I E l :I 1, J I I Il I. 1 i- 2 57 i3: j i:=: l [I LXK ' l r i t 4 7% ven'z o 2*. AW z wmwPatented July 4, 1933 UNITED-- S1'1TAT ES:

PATENT. oFFIcs ALFRED.DIERSCHKE,..OF.ESSEI\T; GERMANY, AssIenon, BYMnsNnASSIGNMENT-5,71%,

THE KOPPERS COMPANY or DELAWARE, on PITTSBURGH, PENNSYLVANIA, aoon-SPORA'IION or DELAWARE APPARATUS Fen Minibar COOLING 0F COKE Applicationfiled December 14-, 1921, Serial No. 580,949, and in Germany December10, 1930.

An application has been filed. in Germany Dec-i 10, 1930'.

My invention :relates to the dry cooling of coke and moreparticnlarly'to the type of 5 coke icool-inginv'which thecoke cooled ina totally enclo'sed cha-mber by'means. of cold inert gases Wlnchafterbeing brought into contact with the-hot coke arepassed; over pipesthrough whichflows acooling agent,

preferablywvater, whereby the inert gases are coolecland "thenreutilized for cooling the coke.

One objectof my invention is to provide improvements-in apparatus. forthe dry coolingot coke WlllCl'l'GIlfLlOlG the dry cooling of coke,particularly of coke produced in a coke oven battery equipped withhorizontal coking=cha1-nbers, to be carriedout inapa'rtieularlyeconomical manner;

Accordingto my presentinvention for cooling the glowing eoke expelledfrom the coling -chambers-I employ 2a steeply inclined drum prov-ided'at' both. ends with closable openings, the said druinbeing movably dis;posedin frontof the coke oven battery-similarly to theordinary cokequenching trucks, so that-the coke expelled from one of the cokingchambers of the battery canbe-slid directly througlrtheupper openinginto the cooling drum which 'has been run upto the:

said coking chamber, and after cooling can be ejected through the-loweropening of the cooling drumfat any required point along'the track.

This particular construction of the cooling drun'r does away with: therelatively eX-,

pensive apparatusand devices hitherto used 4 for; tna nsferringtheglowing coke from the icokinggcchamber into the'cooling drum and forremovin'g. the cooled coke from the drum.

Furtherm ore, vwith my arrangement I obtain a substantialsavingofrcoke,,-asthe coke does nota-have to: be loaded and unloaded severaltimes as hitherto,-wherebythe larger pieces of coke are easil-ybroken.Finally, in my arrangement the loss of coke by combustion is verysmalls, as: tlreglowi-ngcoke only comes intocont-act with the air roiashort period of time. 1' These technical advantages give a higher yieldof coke and a more valuable.

product-than heretofore.

A further object of my invention'is to provide nnprovements inthe-contamer serving to cool the coke, in order to obtain amoreer'ii'cient and economic cooling of the coke than heretofore.

According to mypresent invention there is provided in the drumserving tocool the;

coke a series of channels or pipes arranged, 1n the manner of a tubularsteam boiler andmensions which entirely or approximately correspond'tothe dimensions of the'coking chamber 111 which the coke was made. This"latter feature is advantageous inorder to prevent the coke cakesplittmg or the larger c I pie es of coke breaking when the coke cake isbeing transferred from the coking chamber intothe cooler; For thispurpose-itis also of advantage to provide the cooling drum with meansfor bringing it into a horizontal orahnost horizontal positionduringthe' introduction of thecoke cake. For supporting: the coke andsaving thetubes it is preferred to provide in'the space between thecooling tubes for receiving the coke a channeled bed in the bottom ofwhich openings are provided which permit the passage 7 of inert gasesthrough the glowing coke.

I also providethe cooling drum with means for withdrawing the inertgases at the top'of 11;.

the drum after passing over the coke, and for returning same to'theopenings in'th'e chain neled bed after having beencooled.

' In orderto facilitate the passage of inert gases through the glowingcoke, it is also" preferable to provide on the bed; afiue or channel ofapproximately box shape, in the sides of which openings forthe. passage"of These gas passages are gas are provided.

adequately protected against; blockage particles of coke.

In the apparatus according to the invention the heat of the glowing cokeis transmitted partly by radiation and partly by convection a to thetubes ,ofthe i cooling drum through which the cooling agent flows. Wateris preferably used for cooling the tubes, and the whole coolingapparatus can with advantage be used for producing hot water.

Thus a further object of my invention is to provide means for utilizingthe above de scribed coke cooler for preparing hot water which can bepassed from the coke cooling apparatus to remote places for use.

For this purpose I provide parallel to the track of the coolingapparatus channels or gutters for supplying and removing cold and hotwater into which projects the cold water supply pipe of the cooling drumor the hot water discharge pipe of the cooling drum. A pump is alsoprovided in the cooling apparatus in order to pump cold water out of one3 channel through the cooling tubes of the drum and to force the hotwater into the other channel.

In order to decrease the heat loss of the hot water inside the watergutters or channels they are provided with heat insulation. They '25 arealso preferablycovered in at the top and the cover is provided withapertures through which the preferably telescopic endsof the 1 supplyand discharge pipes of the cooling drum may be sunk,

It is also preferred to provide these apertures with flaps which openautomatically when the pipes are lowered into the apertures.

Finally it is possible to cover the gutters or channels throughout theirwhole length with hinged lids which when the apparatus is in operationare opened automatically by projections having a form similar to aploughshare which are provided on the ends of the pipes dipping into thechannels, and which close automatically by their own weight.-

With these andother objects of the invention in view I will now describethe nature of thepresent invention on the lines of the accompanyingdrawings in which:

Figure 1 is a vertical longitudinal section and partial side elevationthrough a coke cooling apparatus constructed in accordance with theinvention,

Figure 2 is a vertical cross-sectional view illustrating the channels orguttersfor the passage of the cooling water in the closed position andFigure 3 is avertical cross sectionandpan tial side elevation of theapparatus according to 'Fig. 1.

In the apparatus illustrated in. the drawings the coke is made in anordinary horizontal oven chamber 1 into which the coal which is to becoked can be charged at the top through openings 2. Beneath the cokingchamber regenerators 3 for warming air and, if required,'fuel gas areprovided which are utilized for heating the walls of the cokingchambers.

The coking chamber 1 has openings on both ends which can be closed bymeans of doors 4. In front of the coking chamber a trolley 6 runs onwheels 7 on a platform 5, the said trolley carrying two walls 9consisting of cast iron plates 8 or the like and disillustrated in thedrawings. When the coal in one of the chambers 1 has been completelytransformed into coke and is therefore ready to be withdrawn from. thechamber, the trolley is run up before the door of the chamher so thatthe arms 10 can engage beneath projections 11 of the door 4. The door isthen withdrawn from the door opening of the chamberand the trolley.moved sideways so hat the opening between the two walls 9 is ri "it infront of the chamber opening.

Then as usual the coke cake inside the chamber 1 is pushedout from theotherend of the chamber, and moves between the walls 9 of the trolley 6,whereby it is prevented from breaking to pieces. As when the coke cakeis pushed through the space between the guides 9 of the trolley 6 thereis a risk owing to the large amount of friction set up by the cake thatthe trolley will tip over, one or more rollers 12 are provided on thesuperstructure of the trolley 6 which apply themselves against a bar 13firmly attached to the oven battery. 1

As illustrated in Fig. 1, the guide walls of thg trolley 6 are bentdownwards on the out- SlC e.

Alongside the track 5 for the trolley 6 longitudinally of the coke ovenbattery a second track 1% is provided on whose rails 15 a travellingframe 17 carrying the drum 18 for cooling the coke is adapted to run onwheels 16. v

This cooling drum which covered with a material 19 which is abadconductor of heat is disposed at an angle on the travelling frame 17,the angle being such that the coke which has been introduced into the.cooling drum can slideautomatically out of the contamer.

The cooling drum 18 has an approximately cylindrical cross-section andat each end an opening 20 or 21. The upper openlng 20 can be closed bymeans of a lid 22 whiohis oscillatable on a shaft 23 for the purpose of'clos-j ing the'opening 20. The shaft 23 isfrotatable in bearings 24 andcarries on the outside a bevel wheel 25, which through the inter- C 3ST'lLO mediary of another .bevel wheel 26 and'a trolley 6; which ,Tlieopen-ing 0f the coolin drum 18 'isv of such form thatthe coke caieexpressed between the walls 9 of the trolley 6 can slide into theinteriorof the cooling drum 18 over the steeplyinclined lateralprojection 29 of the trolley 6. For supportingthis process the drum 18has a second'projection 30extending to beneath the projection 29 of theI prevents the coke falling through the space between the drum andthetrolleyg The lower opening 21 of the drum .18 can be'closed by means ofalid '31. which is hingedly connected to a lever 33 oscillatable aboutthe point 32.

The leve'r.33 carries pivotally at its outer end a locking lever 34whose nose 35'when the lever 34*is closed lies against a projection 36of the cooling dr'um under the action of a weight secured to the lever34. I

A hand wheel 39 acting on a screw threaded spindle 38 serves to open theflap .31.

The screw-threaded spindle 38 is connected .at its lower end with alever arm 40 which 'is connected at 32 to the lever 33 and adapted tomove between limits. The lower end of the spindle 38 is also connectedthrough the rod 41 with the. locking lever 34. The con ,nectionbetweenthe screw-threaded spindle and the lid lever 33' and the locking lever34 is so formed that whenthe. spindle 38 moves upwards the lever 34 isfirst of allso oscillated that its nose 35 ismoved away from the lockprojection 36 of the drum. As the spindle 38 continues to move the lidlever 33 and therewith the lid 31 are swung upwards by means of thelever arm 40, until the lower opening 2'1 of the cooling drum iscompletely free. On the other handywhenthe openagainst the projection'36of the cooling drum.

As is'particularly evident from Fig. 35 a series of tubes 42 areprovided in the interior of the coolingdruin 18, .with a space 43between them. for receiving the coke which is introduced into the drum.For protecting the lower cooling tubes 42 from being flattened a flutedsupport 44 is provided in the cooling 1 period of 1 ,4, hours issnfiicient with a nordruin, whose lateral walls are constructed in themanner of a venetian blind. On the coke bed support 44'a'n upwardlyprojecting ehanne'l 46 0f approximately.box-shaped section is alsoprovided in the vertical sides of which openings 47 are provided.

As already stated the glowingcoke introduced into the cooling drum givesup its heat to the cooling tubes 42 by radiation and convection. Forthis purpose'inertgases arepassed through the channel 46 and opening s47into the cokebed bymeans of a fan .48 driven by a motor 49, the saidfan being con-- nected on the onehand'through the pipe 50 connectingpipe 52 7 support 44,

with the lower end of the channel 46 and on the other hand through thepipe 51 with a provided at the upper end of the drum 18. The coolinggases are thus first forced into the channel 46, escape therefromthrough the lateral openings 47, flow through the hot coke lying on thebed tubes 42.,

The cooling tubes 42 are secured at their upper and lower ends in tubeheads 53 in the and then'flow alongside and in contact with the outersurface of the uppermanner of a tubular steam boiler. Through the tubes42 a cooling liquid preferably cold water ispassech which flows out ofthe elevated reservoir 55. which is disposed in the upper part of thetraveling frame 17 above the cooling drum, and. enters the lower tubehead 53 thi'ougl a pipe The cold water is withdrawn byineans of a pump56 through a pipe- 57'fi'om a stationary gutter or channel 58disposedalong'the track of the drum trolley, The pump 56 is connected by thepipe 59 with thesupply tank 55. The hot liquid or hot water is withdrawnat the upper end of the cooling drum from the upper tubehead through thepipes 60 and then flows through. the pipe 61 to a stationary gutter 62provided near, the gutter 58.

cooling drum trolley .and during the move- T he pipes 61 and57are'firinly connected with the ment of the said trolley move to and froin the stationary gutters 58 and 62.

As a protection against dirt and to prevent loss of heat the gutters 58and 62 are covered with a series of gutterlids or flaps 63 which arehiiigedly mounted. onthe side walls of the gutters by means of hinges63.

For opening the flaps 63 projections 64 are provided on the lower endsof the tubes 61 and 57. The arrangement issucli that as the drum trolleymoves along the flaps covering the gutters 58 and 62'arc'opened oneafter another by the projections 64 and close automatically after theprojections 64 when the trolley 6 moves further on.

In the cooling drum constructed in accord- ,ance with the presentinvention a rapid and ellic ient cooling of the coke may be obtainedwitha great saving of coke. By practical tests'Ifhave-found that as ageneral rule a' The construction of the trolley in the latter case isthe same as that herein described.

In utilizing the apparatus according to this invention for cooling coke.after opening the upper dru-in lid 22 and closing the lower lid thetrolley is run up beneath the guiding trolley 6 so thatthe-cokecakeslides directly ISO from the trolley 6 into the drum 18. When thecontents or the coking chamber 1 have been entirelyremoved into thecooling drum 18, the cooling drum trolley is moved aside a little andthe lid 22 closed.

After the coke has remained in the cooling drum for the necessary timeand the desired temperature has been reached, the cooling drum trolleyis run beneath an cxpeller of suitable construction which is not shownchambers, of a carriage adapted for being propelled along said rails, a'steeplyinclined closed dry cooling coke container mounted on saidcarriage and provided with upper and lower closable coke inlet andoutlet openings for receiving hot coke "from the coking chambers; meanscooperating with said container and carried therewith by said carriagefor e'tl'ccting a recirculation of an inert cool.- ing gas through hotcoke in said container and means carried with said container by saidcarriage and adapted for cooling the recirculating inert coke coolinggas by indirect heat exchange.

2. The combination with a coke oven battery comprising coking chambersand coke conveyor rails extending longitudinally of the battery oppositethe coking chambers for the conveyance of coke chambers, of a. carriageadapted for being propelled along said rails, a steeply inclined closeddry cooling coke container mounted on said carriage and provided withupper and lower closable coke inlet and outlet openings for receivinghot coke from the coking chambers; means cooperatlng with said containerand carried therewith bysaid carriage for effecting a recirculation ofan inert cooling gas through hot coke in said container, and meanscarried with said container by said carriage and adapted for cooling therecirculating inert coke cooling gas by indirect heat exchange, saidlast mentioned means com-o prising a tube boiler for circulation of hotwater in indirect contact with the circulating inert coke cooling gas.

3. The combination with a coke oven battery comprising coking chambersand coke conveyor rails extending longitudinally of the battery oppositethe coking chambers for the conveyance of chambers, of a carriageadaptedior being from the coking coke from the coking propelled alongsaid rails, a steeply inclined closed dry cooling coke container mountedon saidcarriage and provided with upper and lower closable coke inletand outlet openings for'rec'eiving hot coke from the coking chambers, agroupof water. tubes arranged annularly within said container so as.

to form a central coke receiving and contain- 111g chamber in line withsaid coke inlet. and

outlet openings; and means carried with saidcontainer by saidicarriagefor recirculating an inertgas through said coke chamber and through thespaces between said water tubes 7 in closed cycle.

4. The combination with a coke oven battery comprising coking chambersand-coke conveyor rails extending longitudin lly of the battery oppositetheconveyance of cokegtrom the cokingohambers, of a carriage adapted forbeing propolled along said rails, a steeply inclined closed dry coolingcoke container mounted on said carriage and provided with upper andlower closablecoke inlet and outlet openings for receiving hot coke fromthecoking chamthe coking chambers for r hers, a group of water tubesarranged annularly within said container so as toform a central cokereceiving and containing cham: ber inline with said coke inlet andoutlet openings, means carried with saidcontainer by said carriage forrecirculating an inert through said coke chamber and through the spacesbetween said water tubes in closed cycle, and means carried with saidcontainer by said carriage for effecting circulation of water throughsaid tubes, said latter means including a supply drum mounted above saidcontainer at an elevation above said tubes.

5. The combination with a coke oven battery comprising coking chambersandcoke conveyor rails extending longitudinally of the battery oppositethe coking chambers for the conveyance of cokefrom the coking chambers,of a carriage adapted for being pro pelled alon said rails, a steeplyinclined closed dry cooling coke container mounted on said carriage andprovided with upper and lower closable coke inlet and outlet openings,

taining chamber over the water tubesin the lower part thereoi, andinclined from thecoke inlet to outlet; a closed longitudinal channel onthe upper portion or said support and having upwardly directed wallswith inert gas outlet ports therein for passage of inert gas into thecoke chambenmcans carried with said container by sa d carriage forwithdrawing inertgas from around the tubesin the upper part ofthevcontainer andireturning such gas directly into said channel. 7

6. The combination with a coke oven battcry comprising coking chambersand coke conveyor rails extending longitudinally of the battery oppositethe coking chambers for the conveyance of coke from the coking chambers,of a carriage adapted for being propelled along said rails, a steeplyinclined closed dry cooling coke container mounted on said carriage andprovided with upper and lower closable coke inlet and outlet openingsfor receiving hot wire from the coking chambers, water tube boilercarried by said carriage, means carried by said carriage for eilecting arecirculation of inert coke-cool ing gas through said container and incontact with said water tubes, a pin; lity of stationary guttersarranged parallel to said rails, means for circulating water throughsaid tube boiler, said means being carried by and movable with saidcarriage and including two conduits comprising a water inlet conduitdipping into one of said gutters to receive water therefrom and anoutlet conduit dipping into the other gutter to dis- 5 charge hot waterthereto.

TApparatus as claimed in claim (5, and in which self-closing movableclosure lids are provided. on the gutters which are adapted to be openedby the inlet and outlet conduits as they are mover along the gutters bythe carriage.

8. Apparatus claimed in claim 6, and in whicn self-closing oppositelydisposed hinged gutter lids are provided on each of the gutters whichare adapted to be opened by the movement of the inlet and outletconduits between the lids as the coi'iduits are moved along the guttersby the carriage.

9. Apparatus as claimed in claim 6, and

in which self-closing oppositely disposed lel tracks providedlongitudinally of the battery opposite the coking chambers at one sideof the battery, of a plurality of gutters parallel to said tracks, atruck on the inner track and propelled therealong from chamber tochamber and having two guiding walls for guiding coke extracted from therespective coking chambers, a carriage adapted to be propelled along theoutertrack, a closed dry cooling colre container mounted-on and movablewith said carriage and having a steeply inclined coke bed supporttherein and upper and lower closable coke inlet and outlet doors forreceiving and discharging coke from said truck, means carried with saidcontainer by said carriage for recirculating an inert cooling gasthrough coke in said container, a tubular boiler in said container forabsorbing heat from coke therein and located in the, path of the inertgas recirculated by the recirculating means therefor, means foreffecting a forced. circulation of cooling water through said tubularboiler, said means being carried with said container by said carriageand including a hot water outlet conduit dipping into one of saidgutters'and a cool Water inlet conduit dipping in the other gutter, bothsaid conduits being movable lengthwise within said gutters as thecarriage is propelled alongside the battery on the track therefor vfromchamber to chamber. r

11. The combination with a coke oven battery comprising coking chambers,two parallel tracks provided longitudinally of the battery opposite thecoking chambers at one side of the battery, of a plurality of guttersparallel to said tracks, a truck on the inner track and propelledtherealong from chamber to chamber and having two guiding walls forguiding coke extracted from the respective coking chambers, a carriageadapted to be propelled along the outer track, a closed dry cooling cokecontainer mounted on and movable with said carriage and having a steeplyinclined coke bed support therein and'upper and lower closable cokeinlet and outlet doors for receiving and discharging coke fromsaid'truck, means carried with said container by said carriage forrecirculating an inert cooling gas through coke in said container, atubular boiler in said container for absorbing heat from coke thereinand located in the path of the inert gas recirculated by therecirculating means therefor, means for effecting a forced circulationof cooling water through said tubular boiler, said means being carriedwith said container by said carriage and including a hot water outletconduit dipping into one of said gutters and acool water inlet conduitdipping in the other gutter, both said conduits being movable lengthwisewithin said gutters as the carriage is propelled alon side the batteryon the track therefor from 0 amber to chamber, and both said guttersbeing disposed atan elevation abovethe outlet door for discharge of cokebeneath the gutters.

In testimony whereof I have hereunto set my hand. I ALFRED DIERSCHKE.

